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How do you bleed brakes on a 1997 buick lesabre without a tech 1 scan tool

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MANUAL BLEEDING
(see Figures 1, 2, 3, 4, 5 and 6)

CAUTION Never reuse brake fluid which has been bled from the brake system. Brake fluid should be changed every few years. It wears out due to moisture being absorbed, which lowers the boiling point.
Old brake fluid is often the cause of spongy brakes returning a week or so after bleeding the system. If all parts check good. Change the fluid by repeated bleeding.

  1. Deplete the booster reserve by applying the brakes a few times with the engine OFF until all reserve is depleted.
  2. Fill the master cylinder reservoir to the full level mark with brake fluid from a fresh, sealed container. You must maintain the fluid level during the bleeding procedure.
WARNING Clean, high quality brake fluid is essential to the safe and proper operation of the brake system. You should always buy the highest quality brake fluid that is available. If the brake fluid becomes contaminated, drain and flush the system, then refill the master cylinder with new fluid. Never reuse any brake fluid. Any brake fluid that is removed from the system should be discarded. Also, do not allow any brake fluid to come in contact with a painted surface; it will damage the paint.
  1. If the master cylinder is known or suspected to have air in the bore, bleed it as follows before bleeding any of the wheel cylinders or calipers:
    1. Loosen the forward brake line connection and the master cylinder.
    2. Fill the master cylinder until fluid begins to flow from the front pipe connector port, maintaining the fluid level.
    3. Tighten the front brake pipe on the master cylinder securely.
WARNING Make sure the master cylinder reservoir cap is installed before the brake pedal is pressed. This prevents brake fluid from spraying out of the reservoir.
    1. Have an assistant depress the brake pedal slowly one time, and hold. Loosen the forward brake pipe connection again to purge air from the bore. Tighten the connection and then slowly released the brake pedal. Wait 15 seconds. Repeat the sequence, including the 15 second wait, until all air is removed from the bore.
    2. Tighten the brake pipe connection to 11 ft. lbs. (15 Nm).

  1. After all the air has been removed from the front connection, repeat the same procedure at the rear connection of the master cylinder.
  2. Individual wheel cylinders and calipers are bled only after all the air has been removed from the master cylinder.
WARNING Make sure the master cylinder reservoir cap is installed before the brake pedal is pressed. This prevents brake fluid from spraying out of the reservoir.
  1. If all of the wheel circuits must be bled, use one of the following two sequences, depending upon the year of your vehicle:
    1. 487-90 vehicles: right rear, left front, left rear, then right front.
    2. 491-99 vehicles: right rear, left rear, right front, then left front.
  2. Fill the master cylinder reservoir with brake fluid. Keep the level at least 1 / 2 full during the bleeding operation.
  3. Raise and support the vehicle safely.
  4. Remove the bleeder valve cap, and place a proper size box end wrench, or suitable bleeder wrench, over the bleeder valve.
How do you bleed brakes - d312a1f.jpg

Fig. 1: To bleed the rear brakes, remove the cap from the wheel cylinder bleeder screw (see arrow)

0828205.jpg

Fig. 2: Attach a hose to the bleeder valve with the other end submerged in a container of clean brake fluid

b8607f8.jpg

Fig. 3: If necessary, you can remove the bleeder valve from the wheel cylinder by unscrewing it
  1. Attach a transparent tube to the bleeder valve, and submerge the other end of the tube in a clear container, partially filled with clean brake fluid.
    d74d180.jpg

    Fig. 4: There are special bleeder wrenches available, that make bleeding the brakes easier
    1. Have an assistant slowly depress the brake pedal one time, and hold.
    2. Loosen the bleeder valve to purge the airHow do you bleed brakes - 240b549.jpgylinder.
    240b549.jpg

    Fig. 5: To bleed the front brakes, remove the prHow do you bleed brakes - fa9fa86.jpgp covering the bleeder valve/screw

    fa9fa86.jpg

    Fig. 6: Attach the brake bleeder line, with the other end submerged in a container full of clean brake fluid, then open the valve
    1. Tighten the bleeder screw, then slowly release the brake pedal. Wait 15 seconds.
    2. Repeat this sequence until all the air is removed. Depending upon the amount of air in the system, you may have to repeat the sequence at least 10 times to remove all of the air from the system.
    3. Lower the vehicle and refill the master cylinder.
    4. Check the brake pedal for sponginess. If the pedal is spongy, repeat the entire bleeding procedure.
    5. For 494-99 vehicles, use a Tech 1® or equivalent scan tool to pressure bleed the brake system, using the "Auto Bleed" sequence. Then, repeat the wheel cylinder and caliper bleeding sequence.

    Hope helps.

Posted on Sep 10, 2010

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How to bleed the brakes on my 2002 Buick rendezvous cxl


If the standard bleeding procedures do not produce an acceptable pedal you will need a scantool that can activate the automated ABS bleed and a pressure bleeding system.
To bleed the brakes use the standard pattern of RR,LR,RF,LF

ABS Automated Bleed Procedure
Caution: Refer to Brake Fluid Irritant Caution in Service Precautions.
Notice: Refer to Brake Fluid Effects on Paint and Electrical Components Notice in Service Precautions.
Important: In most circumstances a base brake bleed is all that is required for most component replacements (such as wheel cylinders, calipers, brake tubes, and master cylinder) except for brake pressure modulator valve (BPMV) replacement.
The following automated ABS bleed procedure is required when one of the following occur:
Manual bleeding at the wheel cylinders does not achieve the desired pedal height or feel.
BPMV replacement
Extreme loss of brake fluid has occurred.
Air ingestion is suspected.
If none of the above conditions apply, use standard bleed procedures.
The auto bleed procedure is used on BOSH 5.3 equipped vehicles. This procedure uses a scan tool to cycle the system solenoid valves and run the pump in order to purge the air from the secondary circuits. These secondary circuits are normally closed off, and are only opened during system initialization at vehicle start up and during ABS operation. The automated bleed procedure opens these secondary circuits and allows any air trapped inside the BPMV to flow out toward the wheel cylinders or calipers where it can be purged out of the system.
Automated Bleed Procedure
Preliminary Inspection
Inspect the battery for full charge, repair the battery and charging system, as necessary.
Connect a scan tool to the data link connector (DLC) and select current and history DTCs. Repair any DTCs prior to performing the ABS bleed procedure.
Inspect for visual damage and leaks and repair, as needed.
Preliminary Setup
Raise and vehicle on a suitable support.
Turn the ignition switch to the OFF position.
Remove all 4 tires, if necessary.
Connect the pressure bleeding tool according to the manufacturer's instructions.
Turn the ignition switch to RUN position, engine off.
Connect a scan tool and establish communications with the ABS system.
Pressurize the bleeding tool to 206 - 241 kPa (30 - 35 psi) .
Performing the Automated Bleed Procedure
Notice: The Auto Bleed Procedure may be terminated at any time during the process by pressing the EXIT button. No further Scan Tool prompts pertaining to the Auto Bleed procedure will be given. After exiting the bleed procedure, relieve bleed pressure and disconnect bleed equipment per manufacturers instructions. Failure to properly relieve pressure may result in spilled brake fluid causing damage to components and painted surfaces.
With the pressure bleeding tool at 206 - 241 kPa (30 - 35 psi) , and all bleeder screws in closed position, select Automated Bleed Procedure on the scan tool and follow the instructions.
The first part of the automated bleed procedure will cycle the pump and front release valves for one minute. After the cycling has stopped the scan tool will enter a cool down mode and display a 3 minute timer. The auto bleed will not continue until this timer expired, and cannot be overridden.
During the next step, the scan tool will request the technician to open one of the bleeder screws. The scan tool will then cycle the respective release valve and pump motor for one minute.
The scan tool will repeat step 3 for the remaining bleeder screws.
With the bleeder tool still attached to the vehicle and maintaining 241 kPa (35 psi) , the scan tool will instruct the technician to independently open each bleeder screw for approximately 20 seconds. This should allow any remaining air to be purged from the brake lines.
When the automated bleed procedure is completed the scan tool will display the appropriate message.
Install all 4 tires, if necessary refer to Tire and Wheel Removal and Installation.
Remove pressure from the pressure bleeding tool and then disconnect the tool from the vehicle.
Depress the brake pedal to gage pedal height and feel. Repeat steps 1-8 until the pedal is acceptable.
Remove the scan tool from the DLC connector.
Install.
Lower the vehicle.
Inspect the brake fluid level in master cylinder.
Road test the vehicle while making sure the brake pedal remains high and firm.
If the vehicle is equipped with a traction control system (TCS), the scan tool will cycle both the ABS and the TCS solenoid valves. This bleed procedure is the same as above.

Sep 15, 2016 | 2002 Buick Rendezvous

1 Answer

1997 buick lesabre problems


My only thought right now is a dirty mass air flow sensor. Beyond that it would require a scan tool on the transmission to detect if pressures are correct.

Aug 31, 2014 | 1997 Buick LeSabre

1 Answer

1994 buick lesabre new master cylinder abs light on


Look for a bleeder on ABS HCU unit- the one with brake tubing

Drive it & then Bleed again

Have to hear the abs pump come on,check fuse for it

If that doesn't work may have to open the
hcu with an obd1 scan tool & bleed

Feb 01, 2013 | 1994 Buick LeSabre

2 Answers

I have a 1994 buick and i have no brakes i bleed them and still nothing pedal goes all the way to the floor.


YOU NEED A TECH 1 SCANNER TO MOTOR REHOME FUNCTION PISTONS IN THE ABS BRAKE MODULATOR SHOULD BE RETURN TO THE UPPER MOST POSITION.BEFORE YOU CAN BLEED BRAKES.IF YOU DONT HAVE TECH 1 SCANNER SAFELY RAISE SUPPORT FRONT OF VECHICLE USING JACK STANDS. WITH FRONTS WHEELS OFF GROUND EMERGENCY BRAKE APPLIED WITH PUT VECHICLE IN DRIVE LET WHEELS SPIN AT 5 MILES PER HOUR THEN APPLY BRAKE PUT VECHICLE BACK IN PARK.TURN OFF CAR. THEN WAIT FEW MINUTES THEN START ENGINE AGAIN IF THE AMBER ABS LIGHT STILL FLASHES AND DONT TURN OFF HAVE VECHICLE TOWED IN LET DEALERSHIP PRESSURE BLEED AND USE THE TECH 1 SCANNER TO BLEED AND FIX YOU BRAKES FOR YOU.

Sep 27, 2011 | 1995 Buick LeSabre

1 Answer

HOW DO YOU BLEED A ABS BREAK SYSTEM? WHY DOES A ABS LIGHT STAY ON? i REPLACED THE MASTER CYLINDER AND BLEED THE SYSTEM IN THE STANDERED WAY.


Most ABS lights are caused by a fault with one of the wheel speed sensors. If your brakes are working good, there should be no further bleeding necessary. Remove the wheels and inspect the speed sensors for loose connections, bad wires, or oil and grease buildup on the sensor face. Don't soak the sensors with cleaner. Use a cloth dampened with brake parts cleaner and just wipe the surface clean. If the light stays on, you may have to have it cleared with a a scan tool.

Feb 22, 2011 | 2000 Buick LeSabre

1 Answer

How to bleed brakes on a 1997 buick lesabre


when the brake peadal is pushed a swishing noise is heard around the brake pedal rubber boot

Sep 10, 2010 | 1997 Buick LeSabre

1 Answer

Help!!!


WELL THE DELCO MORAINE ABS BRAKE SYSTEM HARD TO BLEED WITHOUT A TECH 1 SCAN TOOL.YOU HAVE TO RAISE PISTONS IN THE HYDRALIC MODULATOR TO THE HOME POSITION BEFORE BLEEDING THE SYSTEM. THE DEALERSHIP OR GARAGE WILL HAVE TO PRESSURE BLEED AND USE TECH 1 SCAN TOOL.IF YOU HAD THE OLD SCHOOL NON ABS BRAKE SYSTEM YOU CAN MANUAL BLEED BRAKE SYSTEM WITH NO PROBLEMS.

Jul 12, 2010 | 1998 Pontiac Grand Am

1 Answer

Bleed the brakes on 2002 buick lesaber need to power bleed?


Not really. Works better but if you are going to manually bleed brakes start at the farest point. 1) RR 2) LR 3) RF 4) LF don't forget to check brake res. and refill as needed. I am assuming you know how to bleed brakes.

Jul 05, 2009 | 2002 Buick LeSabre

2 Answers

I WAS TOLD THAT IF I BACK UP & PUMP THE BRAKES THEY WILL AUTO-BLEED IS THIS TRUE?


no. there is no way to get the air out of the lines unless you bleed them the right way. forward or reverse, your still pressing on the brakes which in turn pushes the fluid and air towards the tires

Jun 16, 2009 | 1994 Buick LeSabre

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